import React, { Profiler, useState, useRef } from "react";
import Demo1 from "./Demo1";
import Demo2 from "./Demo2";
import Demo3 from "./Demo3";
// import Demo4 from "./Demo4";
import Demo5 from "./Demo5";

console.log("React.version", React.version);

function App() {
  // return <Demo1 />;
  // return <Demo2 />;
  // return <Demo3 />;
  // return <Demo4 />;
  return <Demo5 />;
}

export default App;
